Thomas h



@nitrh gems gaunt [firm- THOMAS H. JENKINS, OF NYAOK,'N EW YORK.

Letters Patent No. 67,121, dated July 23, 1867 IMPROVED rnocsss' OFMAKING STEEL.

TO ALL WHOM IT MAY CONCERN: I

Be it known that I,'THOZ\IAS H..JENK INS, of Nyack,,Rockland county, andState of New York, have invented a new and useful improvement in theProcess of Making Steel; and I do hereby declare that the following is afull, clear, and exactdescription thereof.

My said invention consists in making steel by melting, inputs orcrucibles, wrought iron in admixture with from about five to twelve percentum of cast iron, which has been purified by being immersed, while ina highly heated state, in a liquid bath.

In working according to my said invention, I take crude cast iron andheat it to a high temperature, preferring what is called a cherry-redheat, and then plunge it in a bath which, by preference, consists oftwenty eight gallons ofwater, eight pounds'of oil of vitriol, forty-fourounces of 'sal-ammoniac, twenty ounces of Glauber salts, and thirtyounces of common table salt. I

Other and equivalent solutions may be substituted. It wiil be found bestto treut the iron in small pieces. After the crude cast iron has beenthus treated, or purified, it is mixed with wrought iroi such as scrapiron, in the proportion of about from five to twelve per cent. ofthepurified cast iron, and in admixture melted in pots or crucibles, inthe-manner heretofore usually-practised in the manufacture of caststeel.

I have above stated thatI usethe purified cast iron in the proportionofabout from five to twelve per cent., because I have found that withinthat range I an; enabled to produce the various gradegfrom the lowest tothe highest temper, five percent. of the purifiedeast iron producing thelowest, and. twelve per cent... the highest grade of steel,

By my said process I am enabled to produce good steel with less leborandat less expense than by any other known process.

What I claim as my invention, in the process of making steel, is-

Melting wrought ironin crucibles or pets in admixture with a percentageof crude cast iron, after such crude cast iron has been treated, whilein a highly-heated state, in a bath, substantially as described. i

THO. H. JENKINS.

Witnesses:

OseAn BLAnvELT, "ANDREW A. DEMAREST.

